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RQ SERIES
Packaged Rooftop Units, Heat Pumps,
& Outdoor Air Handling Units
Installation, Operation,
& Maintenance
o Do not store gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
o WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not
use any phone in your building.
Leave the building immediately.
Immediately call your gas supplier from a
phone remote from the building. Follow the
gas supplier’s instructions.
If you cannot reach your gas supplier, call
the fire department.
o
Startup and service must be performed by a
Factory Trained Service Technician.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious
injury, death or property damage.
Be sure to read and understand
the installation, operation and
service instructions in this manual.
Improper installation, adjustment,
alteration, service or maintenance
can cause serious injury, death or
property damage.
A copy of this IOM should be kept
with the unit.
WARNING
3
Table of Contents
AAON® RQ Series Features and Options Introduction ................................................................. 7
Safety .............................................................................................................................................. 8
RQ Series Feature String Nomenclature ....................................................................................... 13
General Information ...................................................................................................................... 22
Codes and Ordinances .............................................................................................................. 22
Receiving Unit .......................................................................................................................... 23
Packaged Direct Expansion (DX) Units ................................................................................... 24
Gas or Electric Heating ............................................................................................................. 25
Wiring Diagrams ....................................................................................................................... 26
Condensate Drain Pan ............................................................................................................... 26
Installation..................................................................................................................................... 27
Unit Location ............................................................................................................................ 27
Setting the Curb ........................................................................................................................ 27
Forklifting the Unit ................................................................................................................... 30
Lifting the Unit ......................................................................................................................... 31
Vertical Duct Connection ......................................................................................................... 32
Seismic Curb Installation .......................................................................................................... 33
Horizontal Duct Connection ..................................................................................................... 35
Outside Air Rain Hood ............................................................................................................. 35
Metal Mesh Filters .................................................................................................................... 36
Electrical ................................................................................................................................... 37
Variable Speed Compressors ................................................................................................ 39
Thermostat Control Wiring ................................................................................................... 39
Gas Heating ............................................................................................................................... 40
Maximum Piping Capacities ................................................................................................. 40
Piping Sizing Examples ........................................................................................................ 41
Inlet and Manifold Pressures ................................................................................................ 41
Gas Pressure Regulator & Overpressure Protection Device ................................................. 42
Additional Gas Piping Considerations .................................................................................. 42
Leak Testing .......................................................................................................................... 44
Refrigerant-to-Water Heat Exchanger ...................................................................................... 44
Water-Source Heat Pump Applications ................................................................................ 44
Open Loop Applications ....................................................................................................... 45
Freezing Water in the Heat Exchanger ................................................................................. 45
Water Piping ......................................................................................................................... 46
Condensate Drain Piping .......................................................................................................... 48
Discharge and Suction Line Piping .......................................................................................... 48
Heating Coils ............................................................................................................................ 51
Chilled Water Coil .................................................................................................................... 51
Electric Preheat ......................................................................................................................... 52
Status Display Screens .......................................................................................................... 52
System Setting Screens ......................................................................................................... 53
LED Flash Alarm Codes ....................................................................................................... 55
Operation ............................................................................................................................... 55
Energy Recovery Units ............................................................................................................. 56
4
Startup ........................................................................................................................................... 64
Filters ........................................................................................................................................ 64
Adjusting Refrigerant Charge ................................................................................................... 64
Checking Liquid Sub-Cooling .............................................................................................. 65
Checking Evaporator Superheat............................................................................................ 65
Adjusting Sub-Cooling and Superheat Temperatures ........................................................... 65
Gas Heater Instructions ............................................................................................................. 67
Freeze Stat Startup .................................................................................................................... 68
Supply Fan EC Motor Startup .................................................................................................. 68
Condenser Fan EC Motor Startup ............................................................................................. 69
Adjustable Fan Cycling Switch Procedure ............................................................................... 71
Operation....................................................................................................................................... 73
Thermostat Operation ............................................................................................................... 73
Packaged DX Cooling Operation and Control ......................................................................... 73
Gas Heater Operation ................................................................................................................ 73
Electric Heating Operation ....................................................................................................... 74
Steam or Hot Water Preheating and Heating Operation ........................................................... 74
Modulating Electric Preheat ..................................................................................................... 74
Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 74
Maintenance .................................................................................................................................. 74
Gas Heating ............................................................................................................................... 74
Gas Heat Exchanger Removal .................................................................................................. 75
DX Cooling ............................................................................................................................... 76
Condenser Fan .......................................................................................................................... 76
Condensate Drain Pans ............................................................................................................. 76
Evaporator Coil ......................................................................................................................... 77
E-Coated Coil Cleaning ............................................................................................................ 77
Microchannel Coil Cleaning ..................................................................................................... 79
Supply Fan ................................................................................................................................ 81
Variable Capacity Compressor Controller ................................................................................ 84
Filter Replacement .................................................................................................................... 85
Replacement Parts ..................................................................................................................... 86
Appendix A - Heat Exchanger Corrosion Resistance ................................................................... 87
Appendix B - Thermistor Temperature vs. Resistance Values ..................................................... 89
RQ Series Startup Form ................................................................................................................ 90
Maintenance Log .......................................................................................................................... 94
Literature Change History............................................................................................................. 95
R94490 · Rev. F · 170925
5
Index of Tables and Figures
Tables:
Table 1 - Electric and Gas Heating Capacities ............................................................................. 25
Table 2 - Auxiliary Electric Heating Capacities ........................................................................... 26
Table 3 - Unit Clearances ............................................................................................................. 27
Table 4 - Single Circuited Variable Speed Compressor Frequency Range .................................. 39
Table 5 - Control Wiring............................................................................................................... 39
Table 6 - 2-6 ton Gas Connections ............................................................................................... 40
Table 7 - Natural Gas (ft
3
/hr) ........................................................................................................ 40
Table 8 - Propane (kBtu/hr) .......................................................................................................... 41
Table 9 - Gas Piping Supports ...................................................................................................... 42
Table 10 - Glycol Freezing Points ................................................................................................ 46
Table 11 - Condenser Water Connections .................................................................................... 46
Table 12 - Hot Water Coil Connection Sizes................................................................................ 51
Table 13 - Steam Coil Connection Sizes ...................................................................................... 51
Table 14 - Chilled Water Coil Connection Sizes .......................................................................... 51
Table 15 - Stages of Electric Preheat ............................................................................................ 54
Table 16 - Acceptable Refrigeration Circuit Values..................................................................... 65
Table 17 - R-410A Refrigerant Temperature-Pressure Chart ....................................................... 66
Table 18 - EC Condenser Fan Cycling Options ............................................................................ 70
Table 19 - Demand Signal vs. Compressor Capacity Modulation ................................................ 84
Table 20 - RQ Series 2-6 ton Pre Filters ....................................................................................... 85
Table 21 - RQ Series 2-6 ton Unit Filters ..................................................................................... 86
Table 22 - RQ Series 2-6 ton Energy Recovery Wheel Filters ..................................................... 86
6
Figures:
Figure 1 - Lockable Handle .......................................................................................................... 23
Figure 2 - RQ Series Orientation .................................................................................................. 27
Figure 3 - RQ Cabinet Standard and Power Exhaust Gasket Locations ....................................... 29
Figure 4 - Forklifting an RQ Series Unit from the Side ............................................................... 30
Figure 5 - Forklifting an RQ Series Unit from the Front .............................................................. 30
Figure 6 - Lifting Details of a 2-6 ton Standard or Power Exhaust Unit ...................................... 31
Figure 7 - Lifting Details of a 2-6 ton Energy Recovery Wheel Unit .......................................... 31
Figure 8 - Vertical Duct Connection ............................................................................................. 32
Figure 9 - Solid Bottom Seismic Curb with Filters ...................................................................... 33
Figure 10 - Seismic Solid Bottom Curb without Filters Cross Section ........................................ 34
Figure 11 - Seismic Solid Bottom Curb without Filters Detail A................................................. 34
Figure 12 - Seismic Solid Bottom Curb without Filters Detail B ................................................. 34
Figure 13 - Seismic Rigid Mount Curb Cross Section ................................................................. 35
Figure 14 - Horizontal duct connections ....................................................................................... 35
Figure 15 - RQ Series unit Closed Rain Hood .............................................................................. 36
Figure 16 - RQ Series unit Open Rain Hood ................................................................................ 36
Figure 17 - Rain Hood with Metal Mesh Filter Rack Installation ................................................ 36
Figure 18 - Unit Base Utility Entry............................................................................................... 37
Figure 19 - Back View of Power Switch from Control Compartment ......................................... 37
Figure 20 - RQ Series Gas Heat Exchanger .................................................................................. 40
Figure 21 - Example 2-6 ton through the Base Gas Piping .......................................................... 43
Figure 22 - Post Corner Hole Location ......................................................................................... 49
Figure 23 - Post Back Hole Location ............................................................................................ 49
Figure 24 - Post Corner Hole Piping............................................................................................. 50
Figure 25 - Post Back Hole Piping ............................................................................................... 50
Figure 26 - Preheat Controller ...................................................................................................... 52
Figure 27 - Gas Heater Instructions .............................................................................................. 67
Figure 28 - PIN Connectors on EC Supply Fan Motor Electronics .............................................. 68
Figure 29 - Gas Heat Exchanger ................................................................................................... 76
Figure 30 - Removal of a Condenser Fan Assembly .................................................................... 76
Figure 31 - Evaporator Coil Access .............................................................................................. 77
Figure 32 - 2-6 ton Supply Fan ..................................................................................................... 81
Figure 33 - RQ Supply Fan Removal Bolts .................................................................................. 81
Figure 34 - RQ Supply Fan Removal Slide .................................................................................. 82
Figure 35 - Variable Capacity Compressor Controller ................................................................. 84
Figure 36 - Compressor Controller Flash Code Details................................................................ 85
Figure 37 - RQ Series 2-6 ton Standard Filter Layout .................................................................. 86
7
AAON® RQ Series Features and Options Introduction
Energy Efficiency
Direct Drive Backward Curved Plenum
Supply Fans
Variable Capacity R-410A Scroll
Compressors
Airside Economizers
Factory Installed AAONAIRE
®
Energy
Recovery Wheels
Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
Modulating Natural Gas Heaters
Modulating/SCR Electric Heaters
Premium Efficiency Motors
Variable Speed Supply/ Exhaust Fans
Air-Source, Water-Source and
Geothermal Heat Pumps
Indoor Air Quality
100% Outside Air
Constant Volume Outside Air Control
Economizer CO
2
Override
High Efficiency Filtration
Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
Interior Corrosion Protection
Humidity Control
High Capacity Cooling Coils
Variable Capacity Compressors
Factory Installed AAONAIRE Total
Energy Recovery Wheels
Modulating Hot Gas Reheat
Safety
Burglar Bars
Freeze Stats
Hot Water/Steam Preheat Coils
Electric Preheat
Phase and Brown Out Protection
Supply/Return Smoke Detectors
Supply/Return Firestats
Installation and Maintenance
Clogged Filter Switch
Color Coded Wiring Diagram
Compressors in Isolated Compartment
Compressor Isolation Valves
Convenience Outlet
Direct Drive Supply Fans
Hinged Access Doors with Lockable
Handles
Magnehelic Gauge
Service Lights
Sight Glass
System Integration
Chilled Water Cooling Coils
Controls by Others
Electric/Natural Gas/LP Heating
Hot Water/Steam Heating Coil
Non-Compressorized DX Coils
Environmentally Friendly
Airside Economizers
Factory Installed AAONAIRE Energy
Recovery Wheels
R-410A Refrigerant
Extended Life
5 Year Compressor Warranty
15 Year Aluminized Steel Heat
Exchanger Warranty
25 Year Stainless Steel Heat Exchanger
Warranty
Interior Corrosion Protection
Polymer E-Coated Coils - 5 Year
Warranty
Stainless Steel Coil Casing
Stainless Steel Drain Pans
8
Safety
Attention should be paid to the following statements:
NOTE - Notes are intended to clarify the unit installation, operation and maintenance.
CAUTION - Caution statements are given to prevent actions that may result in
equipment damage, property damage, or personal injury.
WARNING - Warning statements are given to prevent actions that could result in
equipment damage, property damage, personal injury or death.
DANGER - Danger statements are given to prevent actions that will result in equipment
damage, property damage, severe personal injury or death.
ELECTRIC SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in dangerous
operation, serious injury, death or
property damage.
Improper servicing could result in
dangerous operation, serious injury,
death or property damage.
Before servicing, disconnect all
electrical power to the furnace.
More than one disconnect may be
provided.
When servicing controls, label all
wires prior to disconnecting.
Reconnect wires correctly.
Verify proper operation after
servicing. Secure all doors with
key-lock or nut and bolt.
WARNING
WHAT TO DO IF YOU SMELL GAS
Do not try to turn on unit.
Shut off main gas supply.
Do not touch any electric switch.
Do not use any phone in the
building.
Never test for gas leaks with an
open flame.
Use a gas detection soap solution
and check all gas connections
and shut off valves.
CAUTION
Electric shock hazard. Before
servicing, shut off all electrical power
to the unit, including remote
disconnects, to avoid shock hazard
or injury from rotating parts. Follow
proper Lockout-Tagout procedures.
WARNING
9
FIRE, EXPLOSION OR CARBON
MONOXIDE POISONING HAZARD
Failure to replace proper controls
could result in fire, explosion or
carbon monoxide poisoning. Failure
to follow safety warnings exactly
could result in serious injury, death or
property damage. Do not store or use
gasoline or other flammable vapors
and liquids in the vicinity of this
appliance.
WARNING
ROTATING COMPONENTS
Unit contains fans with moving parts
that can cause serious injury. Do not
open door containing fans until the
power to the unit has been
disconnected and fan wheel has
stopped rotating.
WARNING
GROUNDING REQUIRED
All field installed wiring must be
completed by qualified personnel.
Field installed wiring must comply
with NEC/CEC, local and state
electrical code requirements. Failure
to follow code requirements could
result in serious injury or death.
Provide proper unit ground in
accordance with these code
requirements.
WARNING
During installation, testing, servicing
and troubleshooting of the equipment
it may be necessary to work with live
electrical components. Only a
qualified licensed electrician or
individual properly trained in handling
live electrical components shall
perform these tasks.
Standard NFPA-70E, an OSHA
regulation requiring an Arc Flash
Boundary to be field established and
marked for identification of where
appropriate Personal Protective
Equipment (PPE) be worn, should be
followed.
WARNING
VARIABLE FREQUENCY DRIVES
Do not leave VFDs unattended in
hand mode or manual bypass.
Damage to personnel or equipment
can occur if left unattended. When in
hand mode or manual bypass mode
VFDs will not respond to controls or
alarms.
WARNING
Electric motor over-current protection
and overload protection may be a
function of the Variable Frequency
Drive to which the motors are wired.
Never defeat the VFD motor overload
feature. The overload ampere setting
must not exceed 115% of the electric
motors FLA rating as shown on the
motor nameplate.
CAUTION
10
UNIT HANDLING
To prevent injury or death lifting
equipment capacity shall exceed unit
weight by an adequate safety factor.
Always test-lift unit not more than 24
inches high to verify proper center of
gravity lift point to avoid unit damage,
injury or death.
WARNING
Failure to properly drain and vent
coils when not in use during freezing
temperature may result in coil and
equipment damage.
CAUTION
Rotation must be checked on all
MOTORS AND COMPRESSORS of
3 phase units at startup by a qualified
service technician. Scroll
compressors are directional and can
be damaged if rotated in the wrong
direction. Compressor rotation must
be checked using suction and
discharge gauges. Fan motor rotation
should be checked for proper
operation. Alterations should only be
made at the unit power connection
CAUTION
Do not use oxygen, acetylene or air
in place of refrigerant and dry
nitrogen for leak testing. A violent
explosion may result causing injury or
death.
WARNING
WATER PRESSURE
Prior to connection of condensing
water supply, verify water pressure is
less than maximum pressure shown
on unit nameplate. To prevent injury
or death due to instantaneous
release of high pressure water, relief
valves should be field supplied on
system water piping.
WARNING
Always use a pressure regulator,
valves and gauges to control
incoming pressures when pressure
testing a system. Excessive pressure
may cause line ruptures, equipment
damage or an explosion which may
result in injury or death.
WARNING
To prevent damage to the unit, do not
use acidic chemical coil cleaners. Do
not use alkaline chemical coil
cleaners with a pH value greater than
8.5, after mixing, without first using
an aluminum corrosion inhibitor in the
cleaning solution.
CAUTION
Do not clean DX refrigerant coils with
hot water or steam. The use of hot
water or steam on refrigerant coils
will cause high pressure inside the
coil tubing and damage to the coil.
CAUTION
11
Some chemical coil cleaning
compounds are caustic or toxic.
Use
these substances only in accordance
with the manufacturer’s usage
instructions. Failure to follow
instructions may result in equipment
damage, injury or death.
WARNING
Door compartments containing
hazardous voltage or rotating parts
are equipped with door latches to
allow locks. Door latch are shipped
with nut and bolts requiring tooled
access. If you do not replace the
shipping hardware with a pad lock
always re-install the nut & bolt after
closing the door.
CAUTION
Cleaning the cooling tower or
condenser water loop with harsh
chemicals such as hydrochloric acid
(muriatic acid), chlorine or other
chlorides, can damage the
refrigerant-to-water heat exchanger.
Care should be taken to avoid
allowing chemicals to enter the
refrigerant-to-water heat exchanger.
See Appendix A - Heat Exchanger
Corrosion Resistance for more
information.
CAUTION
OPEN LOOP APPLICATIONS
Failure of the condenser as a result
of chemical corrosion is excluded
from coverage under AAON Inc.
warranties and the heat exchanger
manufacturer’s warranties.
WARNING
WATER FREEZING
Failure of the condenser due to
freezing will allow water to enter the
refrigerant circuit and will cause
extensive damage to the refrigerant
circuit components. Any damage to
the equipment as a result of water
freezing in the condenser is excluded
from coverage under AAON
warranties and the heat exchanger
manufacturer warranties.
WARNING
COMPRESSOR CYCLING
5 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 5 minutes.
5 MINUTE MINIMUM ON TIME
To maintain the proper oil level
compressors must cycle on for a
minimum of 5 minutes.
The cycle rate must not exceed 6
starts per hour.
WARNING
12
1. Startup and service must be performed
by a Factory Trained Service
Technician.
2. Use only with type of the gas approved
for the furnace. Refer to the furnace
rating plate.
3. The unit is for outdoor use only. See
General Information section for more
information.
4. Provide adequate combustion ventilation
air to the furnace. If a vent duct
extension is used, a class III approved
vent is required. See the Locating Units
and Gas Heating sections of the
Installation section of the manual.
5. Always install and operate furnace
within the intended temperature rise
range and duct system external static
pressure (ESP) as specified on the unit
nameplate.
6. The supply and return air ducts must be
derived from the same space. It is
recommended ducts be provided with
access panels to allow inspection for
duct tightness. When a down flow duct
is used with electric heat, the exhaust
duct should be an L shaped duct.
7. Clean furnace, duct and components
upon completion of the construction
setup. Verify furnace operating
conditions including input rate,
temperature rise and ESP.
8. Every unit has a unique equipment
nameplate with electrical, operational,
and unit clearance specifications.
Always refer to the unit nameplate for
specific ratings unique to the model you
have purchased.
9. READ THE ENTIRE INSTALLATION,
OPERATION AND MAINTENANCE
MANUAL. OTHER IMPORTANT
SAFETY PRECAUTIONS ARE
PROVIDED THROUGHOUT THIS
MANUAL.
10. Keep this manual and all literature
safeguarded near or on the unit.
13
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
BASE MODEL
SERIES AND GENERATION
RQ
UNIT SIZE
002 = 2 ton Capacity
003 = 3 ton Capacity
004 = 4 ton Capacity
005 = 5 ton Capacity
006 = 6 ton Capacity
VOLTAGE
1 = 230V/1Φ/60Hz
2 = 230V/3Φ/60Hz
3 = 460V/3Φ/60Hz
4 = 575V/3Φ/60Hz
6 = 380V/3Φ/50Hz
8 = 208V/3Φ/60Hz
9 = 208V/1Φ/60Hz
DISCHARGE/RETURN CONFIGURATION
AND INTERIOR CORROSION PROTECTION
V = Vertical Discharge and Return
H = Horizontal Discharge and Return
J = Option H + Interior Corrosion Protection
W = Option V + Interior Corrosion Protection
K = Vertical Discharge and Horizontal Return
L = Option K + Interior Corrosion Protection
M = Horizontal Discharge and Vertical Return
N = Option M + Interior Corrosion Protection
Model Option A: COOLING/HEAT
PUMP
A1: REFRIGERANT STYLE
0 = Air Handling Unit
B = R-410A - Non-Compressorized DX Air Handling
Unit
C = R-410A - Standard Efficiency
E = R-410A Variable Capacity Scroll Compressor -
High Efficiency
F = R-410A Variable Capacity Scroll Compressor -
Standard Efficiency
G = R-410A Two-Step Compressor - High Efficiency
H = R-410A Two-Step Compressor - Standard
Efficiency
K = R-410A Variable Speed Scroll Compressor –
High Efficiency
A2: UNIT CONFIGURATION
0 = No Cooling
A = Air-Cooled Cond. + Std Evap. Coil
B = Air-Cooled Cond. + 6 Row Evap. Coil
J = Water-Cooled Cond. + Std Evap. Coil
K = Water-Cooled Cond. + 6 Row Evap. Coil
U = Chilled Water Coil - 4 Row
W = Chilled Water Coil - 6 Row
2 = Non-Compressorized + Std Evap. Coil
4 = Non-Compressorized + 6 Row Evap. Coil
6 = Air-Source Heat Pump
7 = Water-Source/Geothermal Heat Pump
A3: COIL COATING
0 = Standard
1 = Polymer E-Coated Evap. and Cond. Coils
8 = Polymer E-Coated Cond. Coil
9 = Polymer E-Coated Cooling Coil
A = Stainless Steel Evap. Coil Casing + Polymer E-
Coated Cond. Coil
D = Stainless Steel Cooling Coil Casing
14
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
A4: COOLING/HEAT PUMP STAGING
0 = No Cooling
1 = 1 Stage
2 = 2 Stage
9 = Variable Capacity
B = 1 Stage + 1 Stage Auxiliary Heat
C = 2 Stage + 1 Stage Auxiliary Heat
E = Modulating - Lead VCC + 1 Stage Aux. Heat
H = Single Serpentine 8 fpi
J = Half Serpentine 8 fpi
K = Single Serpentine 10 fpi
L = Half Serpentine 10 fpi
M = Single Serpentine 12 fpi
N = Half Serpentine 12 fpi
P = 1 Stage + 2 Stage Auxiliary Heat
Q = 2 Stage + 2 Stage Auxiliary Heat
S = Modulating - Lead VCC + 2 Stage Aux. Heat
U = 1 Stage + 4 Stage Auxiliary Heat
V = 2 Stage + 4 Stage Auxiliary Heat
Y = Modulating - Lead VCC + 4 Stage Aux. Heat
Model Option B: HEATING
B1: HEATING TYPE
0 = No Heating
1 = Electric Heat
2 = Natural Gas Aluminized
3 = Natural Gas Stainless Steel
4 = High Altitude Natural Gas Aluminized
5 = High Altitude Natural Gas Stainless Steel
6 = LP Gas Aluminized
7 = LP Gas Stainless Steel
8 = High Altitude LP Gas Aluminized
9 = High Altitude LP Gas Stainless Steel
C = Steam Distributing Standard
D = Steam Distributing Polymer E-Coated
E = Hot Water Standard
F = Hot Water Polymer E-Coated
B2: HEATING DESIGNATION
0 = No Heating
1 = Heat 1
2 = Heat 2
3 = Heat 3
4 = Heat 4
5 = Heat 5
7 = Heat 7
H = 1 Row Coil
J = 2 Row Coil
B3: HEATING STAGING
0 = No Heating
1 = 1 Stage
2 = 2 Stage
3 = 3 Stage
4 = 4 Stage
9 = Modulating Gas/SCR Electric
A = SCR Electric, 0-10V External Control
B = High Turndown Modulating Gas
H = Single Serpentine 8 fpi
J = Half Serpentine 8 fpi
M = Single Serpentine 12 fpi
N = Half Serpentine 12 fpi
15
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 : A 0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 1: RETURN/OUTSIDE AIR
1A: RETURN/OUTSIDE AIR SECTION
0 = Manually Adjustable OA Opening + RA Opening
A = Economizer
B = Econ + Power Exhaust
F = Low cfm Total Energy Recovery Wheel
G = Low cfm Total ERW + Bypass Damper
H = Low cfm Sensible ERW
J = Low cfm Sensible ERW + Bypass Damper
K = 100% Outside Air - No Return Air Opening
L = Motorized Outside Air Damper + RA Opening
M = Motorized Outside Air Damper - No RA
Opening
N = Empty ERW Option Box- No Power Exhaust
P = Empty ERW Option Box + Power Exhaust
Q = Low cfm Total Fixed Plate Energy Recovery
R = Low cfm Total Fixed Plate Energy Recovery +
Bypass Damper
S = Low cfm Sensible Fixed Plate Energy Recovery
T = Low cfm Sensible Fixed Plate Energy Recovery
+ Bypass Damper
U = High cfm Total Fixed Plate Energy Recovery
V = High cfm Total Fixed Plate Energy Recovery +
Bypass Damper
W = High cfm Sensible Fixed Plate Energy Recovery
Y = High cfm Sensible Fixed Plate Energy Recovery
+ Bypass Damper
5 = 100% Return Air
1B: RETURN/EXHAUST AIR BLOWER
CONFIGURATION
0 = Standard – None
A = 1 Blower + Standard Eff. Motor
C = 1 Blower + Premium Eff. Motor
E = 1 Blower + Premium Eff. Motor + 1 VFD
H = 1 Blower + High Efficiency EC Motor
J = 1 Blower + Single Phase Motor + Speed Control
K = Option E + Shaft Grounding
1C: RETURN/EXHAUST AIR BLOWER
0 = Standard - None
B = 15” Backward Curved Plenum
C = 18.5” Backward Curved Plenum
J = 15” Backward Curved Plenum - 70% Width
K = 18.5” Backward Curved Plenum - 60% Width
N= 16” Axial Flow
1D: RETURN/EXHAUST AIR BLOWER
MOTOR
0 = Standard - None
A = 0.25 hp - 850 rpm
B = 0.5 hp - 1075 rpm
C = 1 hp - 1750 rpm
D = 2 hp - 1760 rpm
W = 0.75 hp - 1760 rpm
Z = 0.167 hp - 825 rpm
Feature 2: OUTSIDE AIR CONTROL
0 = Standard - None
A = 3 Position Actuator - Sensible Limit
B = 3 Position Actuator - Enthalpy Limit
C = Fully Modulating Actuator - Sensible Limit
D = Fully Modulating Actuator - Enthalpy Limit
E = DDC Actuator
M = 3 Pos. Act. - Sensible Limit + CO
2
Override
N = 3 Pos. Act. - Enthalpy Limit + CO
2
Override
P = Fully Mod. Act. - Sensible + CO
2
Override
Q = Fully Mod. Act. - Enthalpy + CO
2
Override
R = DDC Actuator + CO
2
Override
S = Dual Minimum Position Potentiometers + Fully
Mod. Act. - Sensible Limit
T = Dual Minimum Position Potentiometers + Fully
Mod. Act. - Enthalpy Limit
U = 2 Position Actuator
Y = Fault Detection and Diagnostics Controller
(FDD) - Sensible Limit
Z = FDD - Enthalpy Limit
1 = FDD Sensible Changeover + CO2 Override
2 = FDD Enthalpy Changeover + CO2 Override
Feature 3: HEAT OPTIONS
0 = Standard - None
E = Discharge Air Override
K = Auxiliary Heat K
L = Auxiliary Heat L
M = Auxiliary Heat M
N = Auxiliary Heat N
16
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J
C
- 0 B A -
O
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 4: MAINTENANCE OPTIONS
0 = Standard - None
A = Field Wired 115V Outlet
B = Factory Wired 115V Outlet
C = Blower Aux. Contact
D = Remote Start/Stop Terminals
E = Options A + C
F = Options A + D
G = Options B + C
H = Options B + D
J = Options A + C + D
K = Options B + C + D
L = Options C + D
Feature 5: SUPPLY AIR OPTIONS
5A: SUPPLY AIR BLOWER CONFIGURATION
P = 1 Blower + High Efficiency EC Motor
Q = 1 Blower + Inverter Rated Motor + 1 VFD
R = 1 Blower + Single Phase Motor + Speed Control
S = Option Q + Shaft Grounding
5B: SUPPLY AIR BLOWER
J = 18.5” Direct Drive Backward Curved Plenum
K = 18.5” Direct Drive BC Plenum - 60% Width
5C: SUPPLY AIR BLOWER MOTOR
A = 0.25 hp - 850 rpm
B = 0.5 hp - 1075 rpm
C = 1 hp - 1750 rpm
D = 2 hp - 1760 rpm
W = 0.75 hp - 1760 rpm
Z = 0.167 hp - 825 rpm
Feature 6: FILTERS
6A: PRE FILTER
0 = Standard - None
A = 2” Pleated - 30% Eff. - MERV 8
B = Metal Mesh Outside Air Filter
C = Lint Screen Filter
D = Exhaust Air ERW Filter
E = Option A + B
F = Option A + D
G = Option B + D
H = Option A + B + D
6B: UNIT FILTER
0 = 2” Throwaway or
2” Pleated - 30% Eff. - MERV 8
A = 2” Pleated - 30% Eff. - MERV 8
B = 4” Pleated - 30% Eff. - MERV 8
C = 2” Permanent Filter + Replaceable Media
F = 4” Pleated - 65% Eff. - MERV 11
G = 4” Pleated - 85% Eff. - MERV 13
H = 4” Pleated - 95% Eff. - MERV 14
6C: FILTER OPTIONS
0 = Standard
A = Clogged Filter Switch
B = Magnehelic Gauge
C = Options A + B
Feature 7: REFRIGERATION
CONTROL
0 = Standard
A = 5 Min. Time Delay Relay - Comp. Off
D = Adjustable Lockout
E = Freeze Stats - Each Circuit
H = Options A + D
J = Options A + E
N = Adjustable Fan Cycling with Adjustable
Compressor Lockout
Q = Options D + E
U = Options A + N
W = Options A + D + E
2 = Options N + E
6 = Options A + N+ E
17
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 8: REFRIGERATION OPTIONS
0 = Standard
C = Hot Gas Reheat
D = Modulating Hot Gas Reheat
E = 0°F Low Ambient Lead Stage
M = Polymer E-Coated Hot Gas Reheat
N = Polymer E-Coated Modulating Hot Gas Reheat
V = Split System Hot Gas Reheat
W = Split System Modulating Hot Gas Reheat
3 = Split System Polymer E-Coated Hot Gas Reheat
4 = Split System Polymer E-Coated Modulating Hot
Gas Reheat
Feature 9: REFRIGERATION
ACCESSORIES
0 = Standard
A = Sight Glass
B = Compressor Isolation Valves
C = Options A + B
D = ECM Condenser Fan - Multiple Speed
E = ECM Condenser Fan – Head Pressure Control
G = Options A + D
H = Options B + D
J = Options A + B + D
K = Options A + E
L = Options B + E
M = Options A + B + E
Feature 10: POWER OPTIONS
0 = Standard Power Block
A = 100 Amp Power Switch
B = 150 Amp Power Switch
C= Power Switch (250 Amp)
G= Circuit Breaker (15 Amp)
H= Circuit Breaker (20 Amp)
J= Circuit Breaker (25 Amp)
K= Circuit Breaker (30 Amp)
L= Circuit Breaker (35 Amp)
M= Circuit Breaker (40 Amp)
N= Circuit Breaker (45 Amp)
P= Circuit Breaker (50 Amp)
Q= Circuit Breaker (60 Amp)
R= Circuit Breaker (70 Amp)
S= Circuit Breaker (80 Amp)
T= Circuit Breaker (90 Amp)
U= Circuit Breaker (100 Amp)
V= Circuit Breaker (110 Amp)
W= Circuit Breaker (125 Amp)
Y= Circuit Breaker (150 Amp)
Z= Circuit Breaker (175 Amp)
1= Circuit Breaker (200 Amp)
2= Circuit Breaker (225 Amp)
3= Circuit Breaker (250 Amp)
18
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 11: SAFETY OPTIONS
0 = Standard
A = Return and Supply Air Firestat
B = Return Air Smoke Detector
C = Supply Air Smoke Detector
D = Options B + C
E = Options A + B
F = Options A + C
G = Options A + B + C
H = Remote Safety Shutoff Terminals
J = Options A + H
K = Options B + H
L = Options C + H
M = Options D + H
N = Options A + B + H
P = Options A + C + H
Q = Options A + D + H
R = High Condensate Level Switch
S = Options A + R
T = Options B + R
U = Options C + R
V = Options D + R
W = Options H + R
Y = Options E + R
Z = Options F + R
1 = Options G + R
2 = Options J + R
3 = Options K + R
4 = Options L + R
5 = Options M + R
6 = Options N + R
7 = Options P + R
8 = Options Q + R
Feature 12: CONTROLS
0 = Standard
A = Low Limit Controls
B = Phase and Brown Out Protection
C = Energy Recovery Wheel Defrost
D = Energy Recovery Wheel Rotation Detection
E = Compressor Power Factor Correction
F = Options A + B
G = Options A + C
H = Options A + D
J = Options A + E
K = Options B + C
L = Options B + D
M = Options B + E
N = Options C + D
P = Options C + E
Q = Options D + E
R = Options A + B + C
S = Options A + B + D
T = Options A + B + E
U = Options A + C + D
V = Options A + C + E
W = Options A + D + E
Y = Options B + C + D
Z = Options B + C + E
1 = Options B + D + E
2 = Options C + D + E
3 = Options A + B + C + D
4 = Options A + B + C + E
5 = Options A + B + D + E
6 = Options A + C + D + E
7 = Options B + C + D + E
8 = Options A + B + C + D + E
19
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 13: SPECIAL CONTROLS
0 = Terminal Block
D = VAV Unit Controller - VAV Cool + CV Heat
E = Constant Volume Unit Controller - CV Cool +
CV Heat
F = Makeup Air Unit Controller - CV Cool + CV
Heat
J = Factory Installed DDC Controls Furnished by
Others
K = Factory Installed DDC Controls Furnished by
Others with Isolation Relays
L = Terminal Block for Thermostat Control with
Isolation Relays
W = Terminal Block for Variable Capacity
Compressor Thermostat
Y = Single Zone VAV Heat Pump Unit Controller -
VAV Cool + VAV Heat
Z = Constant Volume Heat Pump Unit Controller -
CV Cool + CV Heat
1 = Makeup Air Heat Pump Unit Controller - CV
Cool + CV Heat
2 = Single Zone VAV Unit Controller VAV Cool +
CV Heat
3 = Single Zone VAV Unit Controller VAV Cool +
VAV Heat
4 = Field Installed DDC Controls by Others
5 = Field Installed DDC Controls Furnished by
Others with Isolation Relays
6 = Factory Installed DDC Controls Furnished by
Others with Isolation Relays (SPA)
Feature 14: PREHEAT
14A: PREHEAT CONFIGURATION
0 = Standard - None
A = Steam Distributing Preheat Coil - 1 Row
C = Hot Water Preheat Coil - 1 Row
E = Modulating Electric Preheat
F = Outside Airflow Monitoring Size A
G = Outside Airflow Monitoring Size B
H = Outside Airflow Monitoring Size C
14B: PREHEAT SIZING
0 = Standard – None
A = Single Serpentine 8 fpi
B = Half Serpentine 8 fpi
E = Single Serpentine 12 fpi
F = Half Serpentine 12 fpi
G = 10 kW (7.5 kW @ 208V)
H = 15 kW (11.3 kW @ 208V)
J = 20 kW (15 kW @ 208V)
20
RQ Series Feature String Nomenclature
:
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
Q
- 0 0 5 - 3 - V - B B 0 1 - 3 3 4 :
A
0 0 0 -
D
0 B - P J C - 0 B
A
- 0
D
0 0 0 0 L - 0 0 - 0 0 B 0 0 0 0 0 B
Model Options
Unit Feature Options
GEN
SIZE
Feature 15: Glycol Percentage
0 = Standard
A = 20% Propylene Glycol
B = 40% Propylene Glycol
C = Field Adjustable for Glycol Percentage
Feature 16: INTERIOR CABINET
OPTIONS
0 = Standard
B = Control Panel Service Lights
H = UV Lights
J = Compressor Sound Blanket (CSB)
K = Control Panel Service Lights + UV Lights
L = Control Panel Service Lights + CSB
M = UV Lights + CSB
N = Control Panel Service Lights + UV Lights +
CSB
Feature 17: EXTERIOR CABINET
OPTIONS
0 = Standard
A= Base Insulation
B = Burglar Bars
D = Options A + B
Feature 18: Customer Code
0 = Standard
Feature 19: CODE OPTIONS
0 = Standard - ETL U.S.A. Listing
A = M.E.A.
B = Chicago - Cool + Gas
C = Chicago - Cool + Electric Heat
D = Chicago - Cool Only
E = Chicago - Gas Only
F = Chicago - Electric Heat Only
G = Chicago - No Cool + No Heat
H = ETL U.S.A. + Canada Listing
K = California OSHPD Certification
L = Shake Table Cert. (ASCE 7-05/ICC-ES AC 156)
M = Seismic Construction (Non-Certified)
N = California OSHPD Certification + Chicago
P = Shake Table Cert. (ASCE 7-05/ICC-ES AC 156)
+ Chicago
Q = Seismic Construction (Non-Certified) + Chicago
Feature 20: CRATING
0 = Standard
A = Export Crating
B = Export Crating - No Condenser Section
C = Shrink Wrap
D = Options A + C
E = Options B + C
Feature 21: WATER-COOLED
CONDENSER
0 = Standard - None
A = Balancing Valves
B = Water Flow Switch
C = Motorized Shut-off Valve
D = Head Pressure Control
E = Options A + B
F = Options A + C
G = Options A + D
H = Options B + C
J = Options B + D
L = Options A + B + C
M = Options A + B + D
R = CuNi Coaxial Heat Exchanger
S = Options A + R
T = Options B + R
U = Options C + R
V = Options D + R
W = Options A + B + R
Y = Options A + C + R
Z = Options A + D + R
1 = Options B + C + R
2 = Options B + D + R
3 = Options C + D + R
4 = Options A + B + C + R
5 = Options A + B + D + R
/
